M 3 - Globular Cluster

Canes Venatici

Globular Cluster

M 3 - Globular Cluster - North is to the left
Date: Apr 19, 2008 Time: 10:30 CDT Location: Haltom City Tx
Instrument: 253mm f/9 Ritchey Chretien Mount: AP1200GTO Guiding: STL-Internal Guider
Extra Hardware: None Seeing: Good Transparency: Fair
Camera: SBIG STL11K Filter Wheel: Internal Filter: AstroDon 6nm L
Exposure: 8 x 600 Seconds Luminance Camera Control: MaximDL 4.11 Processing: MaximDL,Sigma-Reject, PSCS

Image Center: RA 13h 42m 37s, Dec +28d 20m 18s, Pos Angle 359d 40'
Effective Focal Length 2276.7 mm ~ .82" per Pixel
Notes: Calm. Temp ~50 Degrees F. Guiding was ~ .5 arc second